One is Cheapskate, which in this incarnation simply tells how many of an item you can make if you drop by and buy the necessary items from vendors (or in other words, what gathered/dropped mats add up to for the recipes).

The other is VoiceFu. It takes setting up a keybind for your press to talk button, and whenever you press it it sends a message to VoiceFu on other people in your group/guild that lets them know you are talking. It shows up either in the FuBar or in the detached tooltip.

I hope these are useful to you all, and if there are features you'd like to see incorporated, let me know.